NAUMOV, Alexey. Additional education and sociocultural barrier. Education Policy, [S. l.], n. 3, p. 84–94, 2022. DOI: 10.22394/2078-838X-2022-3-84-94. Disponível em: https://education-policy.owebs.ru/article/view/9979. Acesso em: 8 nov. 2026.